1.	Simplify 1 Simplify the following expression: $$ \left(-3\times3 + 1 - 1\right)2\left(-5 - 1\right) $$ Correct Answer $$ 108$$ or 108.000

2.	Simplify 2 Simplify the following expression: $$ \frac{2\times4\times4}{-3(-1) - \frac{2}{-3}} $$ Correct Answer $$ \frac{96}{11}$$ or 8.72727

3.	Fractions 1 Simplify the following expression: $$ \frac{-2}{2} + \frac{3}{6} $$ Correct Answer $$ \frac{-1}{2}$$ or -0.5

4.	Fractions 2 Simplify the following expression: $$ \frac{6}{5}\frac{-2}{3} $$ Correct Answer $$ \frac{-4}{5}$$ or -0.7999999999999999

5.	Significant figures 1. Write the following to 4 significant figures: 0.41506416 Correct Answer 0.4151 or $$4.151\times10^{-1}$$ 2. Write the following to 3 significant figures: 641.13183 Correct Answer 641 or $$6.41\times10^{2}$$

6.	Standard Form 1. Write the following in standard form to 3 significant digits: 0.0000286940 Correct Answer $$2.87\times10^{-5}$$ 2. Write the following in standard form to 4 significant digits: 2746.64 Correct Answer $$2.747\times10^{3}$$

7.	Significant figures 1. Write the following in preferred standard form to 5 significant digits: 0.02734495 Correct Answer $$27.345\times10^{-3}$$ 2. Write the following in preferred standard form to 5 significant digits: 0.001107647 Correct Answer $$1.1076\times10^{-3}$$

8.	Simplify 2 Simplify the following expression: $$ 2\frac{-3}{-5} - \frac{-5\times5}{4(-3)} $$ Correct Answer $$ \frac{-53}{60}$$ or -0.883333

9.	Simplify 1 Simplify the following expression: $$ {\left(1 + 4\right)}^{2} - \left((-(-4)) + 5 - 6\right) $$ Correct Answer $$ 22$$ or 22.0000

10.	Simplify 2 Simplify the following expression: $$ \frac{{\left(-4 + -4\right)}^{2}}{\frac{2}{5} + -2\times2} $$ Correct Answer $$ \frac{-160}{9}$$ or -17.7778